var ALERT_TITLE = "Exit 66 Jukebox";
var ALERT_BUTTON_TEXT = "Ok";

if(document.getElementById) {
	window.alert = function(txt) {
		createCustomAlert(txt);
	}
}

function createCustomAlert(txt) {
	d = document;

	if(d.getElementById("modalContainer")) return;

	mObj = d.getElementsByTagName("body")[0].appendChild(d.createElement("div"));
	mObj.id = "modalContainer";
	mObj.style.height = d.documentElement.scrollHeight + "px";
	mObj.style.display = "none";	
    
	alertObj = mObj.appendChild(d.createElement("div"));
    
	alertObj.id = "alertBox";
	if(d.all && !window.opera) alertObj.style.top = document.documentElement.scrollTop + "px";
	alertObj.style.visibility="visible";	
    alertObj.style.left = (d.documentElement.scrollWidth - 300)/2 + "px";
    

	h1 = alertObj.appendChild(d.createElement("h1"));
	h1.appendChild(d.createTextNode(ALERT_TITLE));

	msg = alertObj.appendChild(d.createElement("p"));
	msg.appendChild(d.createTextNode(txt));

	btn = alertObj.appendChild(d.createElement("a"));
	btn.id = "closeBtn";
	btn.appendChild(d.createTextNode(ALERT_BUTTON_TEXT));
	btn.href = "#";
	btn.onclick = function() { removeCustomAlert();return false; }
    
    mObj.style.display = "block";	
}

function removeCustomAlert() {
	document.getElementsByTagName("body")[0].removeChild(document.getElementById("modalContainer"));
}
